EP 2561622 A4 20140416 - APPARATUS AND METHOD FOR CREST FACTOR REDUCTION ARCHITECTURE
Title (en)
APPARATUS AND METHOD FOR CREST FACTOR REDUCTION ARCHITECTURE
Title (de)
VORRICHTUNG UND VERFAHREN FÜR EINE SCHEITELFAKTOR-REDUZIERUNGSARCHITEKTUR
Title (fr)
APPAREIL ET PROCÉDÉ POUR ARCHITECTURE DE RÉDUCTION DU FACTEUR DE CRÊTE
Publication
Application
Priority
- US 76475510 A 20100421
- KR 2011002875 W 20110421
Abstract (en)
[origin: US2011261896A1] A device and a method for crest factor reduction reduces peak-to-average ratio (PAR) to increase power amplifier efficiency. A first hard clipping block performs hard clipping on an input signal when the amplitude of the input signal is greater than a first threshold. A shaping filter reshapes the spectrum of the hard clipped signal. An interpolator increases the sampling rate of the reshaped signal. A second hard clipping block performs hard clipping on the interpolated signal when the amplitude of the interpolated signal is greater than a second threshold.
IPC 8 full level
H04B 1/62 (2006.01); H04B 1/04 (2006.01); H04L 27/08 (2006.01); H04L 27/26 (2006.01); H04L 27/36 (2006.01)
CPC (source: EP KR US)
H04B 1/04 (2013.01 - KR); H04B 1/62 (2013.01 - KR); H04L 27/2623 (2013.01 - EP US); H04L 27/2624 (2013.01 - EP US)
Citation (search report)
- [IA] US 2005163248 A1 20050728 - BERANGI REZA [AU], et al
- [A] US 2002191705 A1 20021219 - MELSA PETER J [US], et al
- [A] US 7313373 B1 20071225 - LASKHARIAN NAVID [US], et al
- See references of WO 2011132958A2
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
US 2011261896 A1 20111027; US 8340210 B2 20121225; EP 2561622 A2 20130227; EP 2561622 A4 20140416; KR 101788896 B1 20171020; KR 20130093513 A 20130822; WO 2011132958 A2 20111027; WO 2011132958 A3 20120202
DOCDB simple family (application)
US 76475510 A 20100421; EP 11772246 A 20110421; KR 2011002875 W 20110421; KR 20127030534 A 20110421